Event: Division 5

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Opponent Rating Result
Anthony Taylor 1318 1 - 0
Alan Johnson 1563 0 - 1
Martin D Brookes 1347 1 - 0
Charles Greer 1484 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1428 = (5712 + 400 * (2 - 2)) / 4)

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